Method and device for producing stacks from continuously...

B - Operations – Transporting – 65 – H

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B65H 31/02 (2006.01) B65H 31/06 (2006.01) B65H 31/32 (2006.01)

Patent

CA 2424048

For being stacked, flat articles, in particular printed products, are supplied to a feed point in an imbricated stream, in which they overlap one another and are arranged standing substantially upright. In the feed point, their leading edge is pushed against an aligning element arranged transverse to the supply direction and thereby they are redirected at right angles and arranged in a stack-like arrangement, The stack- like arrangement grows in the stacking direction into a receiving device, being laterally guided and being supported at its downstream end by a supporting element. Distanced in the stacking direction from the feed point a condensing means is provided for accelerating the articles in the stack-like arrangement towards the supporting element in such a manner, that a downstream part of the stack-like arrangement is condensed and a feed-side part is kept loose. For detaching a discrete stack from the stack- like arrangement, a separating element is utilised for splitting up the supplied imbricated stream and for pushing the loose part of the stack-like arrangement against the condensed part. Thereupon the receiving device carrying the stack is replaced with an empty receiving device and the separating element is removed. Stacking comprising supplying the articles to a loose part of a stack-like arrangement, is gentle on the articles anti therefore applicable without problems for articles with little stability. For detaching a stack from the stack-like arrangement the supply stream does not have to be interrupted.

Méthode et dispositif de production de piles d'articles plats, plus précisément de produits imprimés, permettant d'acheminer les articles vers un point d'alimentation en un flux imbriqué de manière à ce qu'ils se chevauchent et de les placer en position presque verticale. Au point d'alimentation, le bord tête est poussé contre un élément d'alignement perpendiculaire au sens de l'alimentation. Les articles sont ainsi replacés perpendiculairement pour former un empilement. L'empilement croît dans la direction d'empilement jusqu'à un dispositif de réception, aidé par des guides latéraux et soutenu en aval par un support. Un dispositif de compactage, séparé du point d'alimentation dans l'axe d'empilement, permet de pousser les articles de l'empilement vers le support, de sorte que la partie en aval de l'empilement est compactée et que la partie orientée vers l'alimentation demeure libre. Afin de séparer une petite pile d'un empilement, un élément de séparation permet de diviser le flux imbriqué et de pousser la partie libre de l'empilement contre la partie compacte. Ensuite, le dispositif de réception supportant la pile fait place à un dispositif de réception vide et l'élément de séparation est retiré. L'empilage consistant à mettre les articles dans la partie libre d'un empilement permet de ménager les articles. Ainsi, cette méthode s'applique facilement aux articles peu stables. Pour séparer une pile d'un empilement, le flux d'alimentation n'a pas à être interrompu.

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